Abstract:
This paper mainly discussed the differences of cotton canopy structural characteristics in different irrigation condition of the extend breed Xinluzao 12 and Xinluzao 13 in North Xinjiang cotton growing region,then discovered that Xinluzao 12 is more sensible to limited drip irrigation.By the comparison between the two varieties,Xinluzao 13 is more sensible to adaptive irrigation and can acquiring higher yield.Thus Xinluzao 13 is better at adaptive irrigation condition and Xinluzao 12 is better at limited irrigation condition.Then acquired the response of varieties toward different irrigation and the ideal reasonable index of cotton canopy structure,and come to theoretical ground of increasing cotton production and improving availability of water.Material and methods:The experiment was taken during 2003-2004,testing breeds were Xinluzao 12 and Xinluzao 13.Testing time include the whole period of cotton duration.Taking CI-110 Digital Plant Canopy Structure Imager to test canopy structure index,acquire some indexes,such as LAI,MFIA,TC,T,K,LD,etc.Results and analysis:LAI becomes bigger and MFIA becomes smaller at high irrigation.The MFIAmin is showed during the middle of August.The TCmin is in full boll,and Tmin is in full boll.Reasonable K in cotton field is slowly increase from upper to under layer.
Key words:
Different irrigation,
High-yield cotton,
Canopy structure,
Image analysis
CLC Number:
ZHANG Wei, LU Xin, ZHU Yun, CAO Lian-pu. Study on Cotton Canopy Structure Image Factor and Yield in High-yield Cotton of Xinjiang at Different Irrigation[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(5): 105-110. doi: 10.3321/j.issn:1000-7091.2005.05.025.